A gunman killed two people and injured several others at Abundant Life Christian School in Madison, Wisconsin, on Monday.
Police initially said the gunman killed four people, but revised the number Monday afternoon.
Police said they found the gunman, a student at the school, dead when they arrived at the scene around 11 a.m.
"This is something that we all prepare for, but hope we never have to do," Madison Police Chief Shon Barnes said.
Those wounded suffered injuries ranging from life-threatening to minor, police said.
President Joe Biden and Wisconsin Gov. Tony Evers said they are closely monitoring the situation.
"We are praying for the kids, educators, and entire Abundant Life school community as we await more information and are grateful for the first responders who are working quickly to respond," Evers said.
Abundant Life Christian School was founded in 1978, according to its website. It offers classes for children in kindergarten through 12th grade.
This is a breaking news story. Check back for updates.